Sucker-rod socket



Jun 3, 1930.

A. H. NEILSON SUCKER ROD SOCKET Filed Nov. 24,-1928 ATTORNEY v Patented June vf3, 1930 *f f Unire; ystares PATENT OFFICE ALBERT'H. nnrnson, or TULSA, OKLAHOMAY SUCKER-ROD SOCKET Y Application filed November 24,1928. Sgerial No. 321,579. i

My invention relates to sucker rod sockets and more particularly to a device of that character for recovering disconnected or A broken sucker rods from a well; the principal object of the invention being to permit recovery ofthe lost portion of a string Vof rods irrespective of the location of the break in the rods, or variation in the sizes of the rod couplings with which the socket is engageable. A

In accomplishing the objects of my invention, 5I have provided improved details of' structure, the preferred forms of which are a illustrated in the accompanying drawings, wherein: A y

Fig. 1 is a ycentral longitudinal section through well tubing and through my improved socket, showing the socket suspended in the .tubing and .engaging a coupling on a broken sucker rod. f Y

Fig. 2 is an enlarged central longitudinal sectionof the socket showing its engagement 'with the body of a coupling on a broken suckger rod. Y

Fig is a section on theline 3 8, Fig. 2.

i Referring in detail to the drawings:

1 designates well tubing which in oil well pumping practiceis fitted at its lower end with a pump (notV shown), operable by a string of sucker rods 2 extending through the tubing and connecting with actuating (apparat-us. at the ktop of the well.vv l

' 'The string of sucker rods 2 is composed of 'l rsectionsl ofk uniform 'length and provided at V their ends-,with threaded couplings L for i connection 'with adjacent sections.

i Inoperating the pump the suckerrods arel quite often brokenA or disconnected i at the couplings by vibration, and in-order that the lost portion of the string of rods may be recovered from thewell,y I provide my iinprovedsocket 5 presently described.

' The socket 5 includes a cylindrical barrel 6 d of an outside diameter to permitits free sliding movement in the tubing, and vis'provi'ded with a ltapered bore 7 restricted toward the lower end of the barrel,and terminating in an,

l f outwardly flared mouth 8 for'guiding the free socket.

f i f endof a'broken or disconnected rod intothe V50.. n

The upper end of the barrel is internally threaded' at 9 for the attachment of acoupling head 10, and ports l1 are provided in the upper portion of the barrel for relieving sand or other foreign substance as may tend to accumulate therein.

The coupling headv 10 is equal in diameter to the barrel and provided at its lower endV with a reduced neck 12 forming a shoulder 13 for abutment with the end of the barrel, the neck being externally threaded at le for engaging the internal threads 9 of the barrel.

Provided inthe coupling 10 is' a central opening` 15 substantially equal in diameter to the upper end of the bore 7 in the barrel, and formed on the upper endof the headv and at one side of the opening is a shank 16, the low-A er end of theshank being tapered back to form a guide surface 17 for guiding sucker rod stems or couplings throughy the opening.

The shank is reinforced on the head by wall portions v18 which connect with opposite sides of the shank, the walls being tapered downwardly away from the shank to provide a'la'rger outlet from' the opening 15 for the passageof sucker r'odstherethrough.

Provided in the upper end of the shank 16 is a threaded opening 19, and mounted in the opening isa connecting rod 20 fitted at its upper'V end withV a coupling 21, which is engaged by a coupling-'22 on the end of a cable 23, whereby thesocket is lowered into and liftedV from the well.v f Y e Located in the tapered bore 7 of the barrel is a set of slips 24 having outer tapered surfaces 25 fitting the tapered bore and adapted for diametrical expansion or contraction, dependent upon their respective upward or .L

downward shiftingmovementin the barrel'. -f

Each' ofthe slipslis provided on its inner surface with upwardly directed teeth 26 and is tapered outwardly at its lower end to form aflaredfmouth 27 for guiding a sucker rod orl rod coupling into the slips.

Formed in the outer surface fand adjacent. the upper end of each slip'is 'an arcuate groove 28 and fitted inthe aligned groove is an expansible. connector ring 29 for retaining'the slips -in assembled relation;

yLocated'in the borer7 and inabutment with Vthe lower end ofthe 'coupling necklQ is a spacer ring 31 having an inturned annular fian'ge 32 engagedby theupper end of a eornpression coily spring 33, the springeyztending downwardly and resting'on the upper end ofV the set of'slips 241' for normally Vurging the slip Vrnernbers into closed relation.

Y In using the socket,y assuming that la' sucker persio tingfrelationpwitha shoulder,Y 'of"saidfhead,V

slips in the barrel,fa flanged spacer ring inthe theslips. f

' In testimon l ,Y

' f f H. NEIVLSON.

rod is broken as shown in Fig. l, thelsocket 23.v On arriving at the broken end of thel `is lowered into the well tubing bythefeable il; Y

barrel engaginganother shoulderof the coups` ling, and a springseated againstv said ring and Y ywhereof'lY aliix niyfsignaturei sucker rod the flared mouth: 8 of 'thefbarrelv e 6 engages and guides'the rod into'the -bo're 7 and as the descent of thesocket continues, the rod-'engagesthe flared mouth 27 ofthe slips, whereupon the slips 24,'spring l'zand kcoupling, head 10 pass over ythe rod until the 1' if slips arrivelin engagement with, or pass over'` a rodl couplingV 4..

' 0n engaging a coupling oi relatively small i dianieter, the slips arelifte'dupward' in theY barrelagainst the springl, until sufficiently expanded to permit the coupling to pass therethrough. kllhen the coupling has passed through the slips, the slips are shifteddownwardly inthe bore 7 bythe spring 31, thusV y restricting the diameter ornied by the slips Y f to less than the diameter ofV the coupling.v

- lfiththecouplingpositioned'abovefthe ref l' i stricted yopening' through thel slips,Vv lifting of the soolietcauses the top of the slipsto engage the lowerend of the coupling-fand the be liftedroni the well. 1 Y

ln vthe even/tofv a disconnection at a cou-` lost portion vof the string of rods may therebyfv :i

Y pling between rodsections, theoperation of l the rdevice is identical to that heretffore described. y

VShould the rod.eotiplingbetween'the-:rody i sections be .molar-ge in ,diameten toy-passthrough the slips,kthe teeth' of the slips then v becorne effective ingrippingthe body ofthe coupling,-sothat the dependingpportion of@A va .string of rods maybe lifted frointhe iwellf.

1 so y What' claim andxdesirefto securefbylllet- -v .d n.; Y VtersFate'ntis: A A v l. A lishing'tool ncludinga couplinghead i having its upper end providedwitli:an'open ing formed by upwardly curveljvvallsmergingintolanextendedshank at one s'ide-ofvsaid l i Y u Y opening', che lower end of saidhead provided 'with' shoulders iiorininga reduced Sneek, a*

barrel having 'atapered: bore Ysecured 'to lthef r 'urging'said'slips downwardly.; A Y l l '2.7Aiish1ngtoolincludingacouplinghead il i lower endof the head, slips inthe barrel, and

means coniined in the barrel for .norlna ly v f having'itsupperendfprovided with an open# Y ing formed byjiupwardlv-curyed Ywalls mergvided with shoulders orniing'a reduced neck, f

a barrel 4having a 'tapered borevvdetachably* v secure'dto the lowerr end of'thefheadrirfabutfYY 

